#header{
    background: #FFFFCC;
    border: 2px solid Chocolate;
    margin: 3px;
    padding: 5px;
}

#elements{
    background: #FFFFEE;
    margin: 3px;
    padding: 5px;
}

.container{
    float: left;
    text-align: center;
    border: 2px solid BurlyWood;
    margin: 3px;
    padding: 5px;
}

img{
    width: 300px;
    height: auto;
}